Hi,
I went through a domain and host transfer. During that time, my site was down for about 4 days. Before then, I was getting 50-75 hits a day. Now Google Analytics tells me I am getting 0. How can I get all my traffic back?
Where did it come from in the first place? Without knowing what type of site it is, or how you've promoted it, it's hard to say. But whatever it was that got you the initial bit of traffic is probably a good place to start.
Did you cancel your old hosting plan before your new hosting plan was in effect?
If so, there's not going to be much you can do but wait and keep doing whatever you did before your site went down.
I haven't ever done this before, but this may be one of those rare instances whereby a few fresh inbound links could solve the problem. Treat it as if your site is new and hasn't been indexed at all, and you may get quicker results.
